This is a great idea... readers in England please help out...

Postcodes are very handy things, for a whole variety of reasons. The databases which map them onto geographical coordinates are expensive, though - no use for those trying to put together something as a hobby or on a limited budget. Been there, done that.

So this site is trying to build the database as a community project, and they're doing rather well. Give them a hand - it won't take a minute. You just find a place a place you know on the map, click on it and enter the postcode - that's it.

Of course, in this country, map data is even more expensive than postcode data, so they're using out-of-copyright maps from the 1940s, which adds a certain charm...

Thanks to Tom Coates for the link